上下椽头尾搭接的木构古建筑受力性能的简化计算方法研究

古建筑木结构主要分为抬梁木构体系和穿斗木构体系,其结构布置与连接节点明显不同于现代木结构。为了进一步提高古建筑木结构的结构计算和结构安全评估的工程实用性,对常见木椽的受力性能简化算法、常见拼合檩条的受力性能简化算法、三架梁和五架梁受力性能的简化算法进行研究,并基于动力特性分析,初步提出古建筑木结构典型构架体系在进深方向和面阔方向结构基本自振周期的近似计算模型。研究成果可为古建筑木结构的结构性能计算、结构安全评估以及加固修缮设计提供依据和参考。

Research on simplified calculation methods for mechanical performance of traditional Chinese timber buildings with lapped rafters

Ancient Chinese timber structures include mainly post and lintel and column and tie construction systems, the structural arrangement and connection joints of which are obviously different from those of modern timber structures. In order to improve the engineering practicability of structural calculations and the structural safety assessment of ancient Chinese timber buildings, simplified calculation methods were advanced. The mechanical performances of common timber rafters, common timber purlins, three-purlin beams and five-purlin beams were studied. In addition, based on the analysis of dynamic characteristics of some typical timber structures, approximate calculation models for the basic structural natural periods of these typical timber structures were proposed. These results may provide a basis and reference for structural calculations, structural safety assessments and strengthening designs of ancient Chinese timber structures.